Improvement in organ-lever couplings for hydraulic motors



HQFQWHEELER. flrgan Lover- Couplings for Hydrauiic Motors.

N0.138,546, PatentedMay6,1873.

n H a on 2 o:

t jj

UNITED STATES PATENT Enron HENRY F. IVHEELER, OF BOSTON,l\j[ASSACElUSETTS.

IMPROVEMENT IN ORGAN-LEVER COUPLINGS FOR HYDRAULIC MGTORS.

Specification forming part of Letters Patent No. 138,546, dated May 6,1573 applicaiion iilcd v July 3, 1872.

To all whom it may concern:

Be it known that I,'HENRY F. WHEELER, of Boston, in the county ofSufiolk and State of Massachusetts, have invented an ImprovedOrgan-Lever Coupling for Hydraulic Motors; and I do hereby declare thatthe following, taken in connection with the drawing which accompaniesand forms part of this specification, is a description of my inventionsufficient to enable those skilled in the art to practice it.

This invention relates to the construction and arrangement of cushioningor spring devices to be applied to a hydraulic motor designed foroperating, the bellows of an organ, the object of the invention being toovercome the jar or concussion at the beginning and end of the stroke,and consequent upon the change of stroke.

The piston-rod of the motor continues up from the motor-cylinder and isattached, at its top, to the bellows-operatin g lever, and I make therod in two parts connected together by a coupling-box, there being inthe box a rubber cushion between the two parts of the pistonrod andanother cushion made as arin g, through which one part of the rodpasses, so that as the piston starts on its up-stroke v to lift thebellows-lever the first force is exerted against and compresses one ofthe cushions, while, when the piston starts down to draw down thebellows-lever, the first or immediate strain is upon the other cushion,so that in each case the force is applied gradually to the bellowsleverwithout j ar or shock. The piston-rod carries an arm which, in moving upor down, strikes a projection on the valve-rod to shift the valve, and Iemploy, in connection with the sliding valve-rod, a stationary rod, uponwhich are stops and springs, the springs being in the path of movementof the arm on the piston-rod, and each spring, with the adjacent stop,being so located that, after the piston-arm in its movement strikes thevalve-rod stop and shifts the valve, the piston can have a continuedmovement, the piston-rod arm striking the spring on the stationary arm,permitting the piston.

to move on, cushioned by the spring, until the movement of the valve iscompleted, and the course of the water changed.

It is in the combination, with the hydraulic motor, of these springs andstops that my invention consists.

The drawing represents t'lllOiOl emhodyin g my invention.

a denotes the motorcylinder; I), the pistonrod c, the valve-rod; d, thecontinuation of the piston-rod, or the rod extending up to and isimmediately against one of the springs, and

that motion is only gradually imparted to the bellows-lever, and withoutshock. Two arms or projections, is Z, are fixed to and extend fromopposite sides of the rod 1), and through the arm 70 the valve-rod 0runs. On this rod is a stop, m, and a nut, a, and between this stop andnut the arm plays, the arm at the end of its upward movement (and theupward movement of the piston) striking the nut :n, (or'a spring orwasher interposed between the nut and arm,) and thereby raising thevalve-rod and shifting the valve, and at the end of its down strokestriking the stop m and moving the valve-rod downward and reshifting thevalve; but as the valve does not always perfectly shift or-move, Iarrange for a continued movement of the piston-rod that shall ease thestroke of the piston, as follows: On the opposite side of the cylinderat I extend from the head a fixed rod, 0, and upon this rod I place astop, 12, and a stop or nut, q, interposing between the nut q and thearm l (the arm I sliding upon the rod 0,) a spring, 1", and between thestop 19 and the arm a spring, 8. The stops p q are at some distanceapart, and are so located that as the piston rises the arm I: strikesthe nut a before the arm l strikes the spring 1, (or cramps said springbetween it and the nut (1;) and if the valve does not so move as toimmediately'change the course of the water to startthe piston back, thearm I then moves against the spring 1, thereby preventing the pistonfrom striking the head of the cylinder or from stopping suddenly. So,when the piston descends, the arm 70 first strikes the stop in, (or aspring or washer between the stop and the arm,) and as the rod 0 ismoved down, then strikes the springs, bearing against and cramping thespring until, by the change of the current of water, the piston is againstarted up.

The stroke of the piston is made adjustable by making the rod 0 abovethe stop it as a screw, and the upper stop it as a nut adjustable uponsaid screw, thereby shifting the valve at any length of stroke, theother rod 0 being similarly screw-threaded for adjustment of the nut q.

By these several provisions the utmost smoothness of motion and freedomfrom jar and concussion are obtained in working the 1. In combinationwith the motor-cylinder and its piston-rod, the coupling-box f and itscushions or springs h 'i, substantially as shown and described.

. 2. In combination with the cylinder at, piston-rod b, valve-rod 0, andstops m n, the stationary rod 0 with its stops p q and springs r s,substantially as shown anddescribed.

3. In combination with the rod 1;, arms is Z, and rods 0 0, theadjustable stops n q, substantially as shown and described.

Witnesses: HENRY F. WHEELER.

FRANCIS GOULD, M. W. FROTHINGHAM.

